6533b7d8fe1ef96bd1269a2a
RESEARCH PRODUCT
Simulation of matrix product states for dissipation and thermalization dynamics of open quantum systems
Souvik Agastisubject
Physicsopen quantum systemthermal bathDynamics (mechanics)General Physics and AstronomyDissipationtime-evolving block decimation algorithm01 natural sciences114 Physical sciencesMatrix multiplication010305 fluids & plasmasOpen quantum systemThermalisationQuantum mechanicsalgoritmit0103 physical sciencesminimally entangled typical thermal stateskvanttifysiikka010306 general physicsQuantumdescription
Abstract We transform the system/reservoir coupling model into a one-dimensional semi-infinite discrete chain through unitary transformation to simulate the open quantum system numerically with the help of time evolving block decimation (TEBD) algorithm. We apply the method to study the dynamics of dissipative systems. We also generate the thermal state of a multimode bath using minimally entangled typical thermal state (METTS) algorithm, and investigate the impact of the thermal bath on an empty system. For both cases, we give an extensive analysis of the impact of the modeling and simulation parameters, and compare the numerics with the analytics.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-01-01 |